请教背景透明设置，这样写到底是透明度多少？

V2EX = way to explore

V2EX 是一个关于分享和探索的地方

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这是一个创建于 2828 天前的主题，其中的信息可能已经有所发展或是发生改变。

#tf-home .overlay{
background: -moz-linear-gradient(top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.73) 17%, rgba(0,0,0,0.66) 35%, rgba(0,0,0,0.55) 62%, rgba(0,0,0,0.4) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0.8)), color-stop(17%,rgba(0,0,0,0.73)), color-stop(35%,rgba(0,0,0,0.66)), color-stop(62%,rgba(0,0,0,0.55)), color-stop(100%,rgba(0,0,0,0.4))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.73) 17%,rgba(0,0,0,0.66) 35%,rgba(0,0,0,0.55) 62%,rgba(0,0,0,0.4) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.73) 17%,rgba(0,0,0,0.66) 35%,rgba(0,0,0,0.55) 62%,rgba(0,0,0,0.4) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.73) 17%,rgba(0,0,0,0.66) 35%,rgba(0,0,0,0.55) 62%,rgba(0,0,0,0.4) 100%); /* IE10+ */
background: linear-gradient(to bottom, rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.73) 17%,rgba(0,0,0,0.66) 35%,rgba(0,0,0,0.55) 62%,rgba(0,0,0,0.4) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#cc000000', endColorstr='#66000000',GradientType=0 ); /* IE6-9 */
height: auto;
background-attachment: fixed;

1 条回复 • 2017-02-25 16:47:17 +08:00

it407841482

2017-02-25 16:47:17 +08:00 via Android

顶部黑色.8 ，底部黑色.4 ，上下颜色线性变化，其他都是浏览器兼容